Nailing machine



Deg-9, 192s.

E. R. POPE NAILING MACHINE Filed Aug. 5 1925 Patented 0a. 9, 1928.

- UNITED STATES PATENT ELMER.B. POPE, OiE HAMILTON, MASSACHUSETTS ASSIGNOR TO UNITED SHOE MA- CHINERY CORPORATION, OF PATERSON, NEW JERSEY, ,A CORPORATION 0]!"11'13137 JERSEY. I

NAILING MACHINE.

Application filed August-5, 1925. Serial No. 48,373.

This invention relates to nailing" machines and has for its object the improvement of the nailing dies and related elements or such machines, for example, as heel attaching machines,with a view to simplifying-their construction and increasing their durability and the certainty and ease of their operation.

In my prior application Serial No. 702,419,

filed March 27, 19%, I have disclosed a heel ing machine nailing die having improved sclt' adjusting means co-operating with the work into which nails are to be driven to determine the points at which the nails shall enter the Work andto insurethat the nails shall enter the work-accurately at said points. In the mechanism illustrated in said application, laterally movable, selif adjustable, upright, nail and driver guiding tubes are provided,

in combination with a. pattern plate which ap- I proximatelydetermines the relative locations of their nozzle ends when the heel attaching nails are to be drlven from them ntothc work.

The pattern plate is moved out of engagement with the nozzle ends of the-tubes when the nails are to be inserted inthe tubes preparatory to the next attaching operation, and the tubes are then located and maintained n predetermined nail receiving positions by theresiliency of the naildrivers, which are at all times at least partially within the tubes. These drivers are sufiiciently yielding I to permit the tubes to be swung'transversely until their nozzle ends, are arranged in the desired nailing pattern when the saidhozzle ends'are again engaged by the :patte'rnjplate.

The present invention may, in a. certain sense, be regarded as a development of, and improvement upon, the invention disclosed in the said application. Asherein illustrated, a nailing die of the self adjusting type is provided in which the resiliency of the nail drivers' is not depended upon to eiiect the positioning of the nail guides for loading purposes, and which, consequently, is not liable to be damaged or. to be caused to fail to operate by breakage of drivers. Improvednail guide positioning means is provided, of such construction that definite accuracy in thenail receiving positionsof the guides is insured and inthe operation'ofwhich, moreover, no bending of the nail drivers is atv any time necessary.

In the illustrated device each nail guide. compr ses a quill which, together with the corresponding driver, is mounted for universal lateral movement in a spherical bearing and the quills andjdrivers are always returned to upright, parallel positions, when the nail guides are ready. to receive the nails,

by the action of a spring pressed block upon the flat surfaces of hemispherical heads formed on the quills and fitting in the bearings already mentioned. The nail guides are shown as consisting of telescopic tubes or quills in which the drivers are secured and with which'the drivers swing bodily without bending, when engaged by a pattern member ,having guide openings arranged in" the pattern of the desired nailing.

I For the purpose of centering the point of a nail as it isdriven from the nail guiding tube, spring fingers are provided whichare normally outside of the bore of the tube when the nailis to befinserted therein but are'automatically moved into guiding engagement with the nail while it is being driven.-

These and other novel features and advan- I tages of the invention will best be understood and appreciated from reading the following r.

.thevaccompanylng drawings, n wh ch, 5

Fig-1 isa view, partly; in elevation and partly1n sect1on,of aset of nail drivers and guides,together with the mounting therefor;

Fig, 2 is a plan viewof the device shown n F g. 1;.

Figi a.

ready to be driven vertical section ofone'of the .nall driving devices with a nail in position Fig.4 is a v ew similar to-Fig. 3but show- 1 ing the parts in theposition. which'they oc--' .cupy when the nail is driven; and

Fig. 5 is a view, partly 1n elevation, and

partly'in section, showing the relative positions of the-parts when the driving'stroke of thenail driver is about half completed. :In the drawings,-a base plate 10' and a cover plate.12, taken together, constitute the driver block or plate of the nailing mechanism. The 1 cover plate12 is provided with recesses 14 for the reception of compression springs 16 I which are confined by screws 18,.threaded into the base plate 10. The springs 16 are at all times under compression and tend yieldingly to hold the plates and 12 together.

The plate 10 has formed in it aseries of sockets having Spherical bearing surfaces each of which constitutes a bearing for a complemental spherical bearing surface on the head of a 'uideor uill member -22.-

A nail driver 2 lis mounted in the member22, in which it is securely maintained by a plug 26 screwed into a threaded extension 28 and bearing against the head end of the driver. The upper face of the head20 is substantially flat and, when the driver is in an upright position, is flush with the topsurtace of the plate 10. The cover plate 1.2 is provided with perforations 30, somewh larger trim the quill members 22, througl which said members pass, and the lower :tac'e ot' the cover plate bears directly upon the flat upper sur{ faces of the heads 20, maintaining the quills and drivers accurately in sprig it, parallel positions.

The quills and drivers, however, may be swung laterally in any direction, the yielding pressure of the cover plate 12 upon the flat surfaces of the heads 20, resulting from the J. at

force exerted by the springs 16, permitting the drivers and quills to be moved into such. positions, for example, as that illustrated in Fig. 4.

'Telescopicallyarranged inside of the quill member 22, and surrounding the driver 2a, is another quill member comprising a nail guiding tube 32 arranged to slide longitudinally of the driver and normally projected to the position shown in Fig. 3 by a compression spring 34, which is capable of yielding to permit the tube" 32 to'telescope into the member 22 sufficiently to permit the nail 40 to be driven out of the quill. The length of the nail -driver 2a is such that when the quill is telescoped the advance end of the driver projects from the quill, as shown in Fig. 1, whereby the nail is driven to the proper depth in-the heel. A retaining sleeve 36 at the upper end of the member 22 prevents the guide tube. 32 from escaping. cured in slots in the wall of the tube 32 and,

, when unconfined, occupy the positions shown in Fig. 3, permitting a nail to be freely in serted in the quill. v Vhen the quill is telescoped, however, as the driving stroke ofthe driver 2 L occurs, the fingers 38 are pressed inward by the sleeve 36, their ends engaging the nail 40, as shown in Fi 5', and centering the nail in the tube 32. 1

42 indicates a hollow die block within which the gang of nail driving devices is located, and 44 indicates a pattern plate for the desired nailing pattern to which pattern plate 4 is secureda rubber heel locating and confining ring 46 of the usual type. 'plate is provided with a serles of guide openings {l8 arranged 1n approximately the nailing Spring fingers 38 are se- The pattern pattern of the rubber heel 50 which is to be attached. V

The guide openings 48, as shown in Figs. 3and l, are conical and, when the driver block 10, 12 is moved upward to drive the attacln guide openings 48, entering and engaging the walls of the cavities 52 in the heel and adj ustthems'elves to accurate register with the holes in the washers located at the bottoms of the cavities.

7 After the nails are driven'the drivers and quills are retracted, returned always to the same predetermined, definite positions, ready to receive the next load of nails from nail loading mechanism which is common and well known inmachines or this general type, as is also the mechanism for removing the pattern plate and-rubber heel to permitthenail loader to be-m oved into position to deliver thenails to the'quills. 'Having described the-invention, what is claimed as new and desired to lie-secured by Letters Patent is: r

1. In anailing machine, the combination of a plurality of self adjustable nail guiding tubes supported to permit transverse movewhereupon the quills are 7 ment oi their nozzle ends, a plurality of nail i drivers operable through said tubes, and

means, separate from the nail drivers, tend-.

ing yieldingly to maintain'thetubes in predetermined, definite posltions. Y

2.1n a nailing machine, the combinationof a plurality of sell adjustable nail guiding tubes supported to permit transverse movement oi their nozzle ends, a pl rality o'fnail drivers operable throughzsaid tubes, means, separate from thena'il drivers, tending'yieldingly to. maintain the tu'bes'in predetermined, definite positions, and a work engaging pat tern member arranged to engage said nozzle ends to control the pattern of' the nailing.

3. In a nailing machine, the combination of a series of self adjustable nail guides,=a eor' responding series of nail drivers'operable through said guides, a pattern-memberhaving a series of guide openings arranged in approximately the nailingpattern ofia heel, means, separate from the nail drivers, for maintaining the nail guides yieldingly in a pattern'diii 'erent from that of said guide'openings, and means for advancing'the nail guides into said guide openings" to locatetheir nozzle ends approximately in said nailingpatter'n.- I I 4; In a nailing machine, the combination of a laterally movable nail anddriver guide, a nail driver operable through-said guide, and yielding means, separate from the nail driver,

tending always to return said guide to a predetermined position. v

5. In a nailing machine, the combination of a nail and driver guide supported to permit swinging movement, a nail driver operable through said guide, and means, separate from the nail driver, tending always to return said guide to an upright position. I

6. In a nailing machine, the combination of a supporting member having a spherical bearing socket, a nail guiding quill having a spherical bearing surface to fit said socket and a flat surface, and quill positioninv means bearing yieldingly upon said flat surtace and tending to maintain the quill in a predetermined position.

7. In a nailing machine, the combination of a supporting member having a spherical bearing socket, a nail guiding quill having a spherical bearing surface to fit said socket and a fiat surface, and a spring pressed, fiat plate bearing upon said fiat surface and tending to maintain the quill in a predetermined position.

8. In a nailing machine, the combination of a nail guidingv quill, a nail driver secured in said quill, and a mounting in which the entire vdriver secured in said quill, said quill and driver are universally movable lat erally.

9. In a nailing machine, the combination of'a telescopic nail guiding quill and a nail of a length to project from the quill when the latter is telescoped.

I 10. In a nailing machine, the combination of a straight nail guiding quill, apermanently' straight nail driver operable through the quill, and mounting means for the driver and the quill permitting their advance-ends to be moved together laterally in all directions.

11. In a nailing machine, the combination of a telescopic nail guiding quill, a nail driver driver being secured in one section of the quill and operable through-the other section thereof, nail centering fingers normally outside of the'bore of said other section to permit the insertion of a nail therein, said fingers being engaged by the first mentioned section and-moved into guiding engagement with the nail when the driving stroke of the nail driver occurs.

In testimony whereof I, have signed my name tothis specification.

r ELMER R. POPE. 

